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Vishay General Semiconductor - Diodes Division SMBJ8.0CD-M3/H
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- Part No.:
- SMBJ8.0CD-M3/H
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-214AA, SMB
- Datasheet:
-
SMBJ8.0CD-M3/H.pdf
- Description:
- TVS DIODE 8VWM 13.4VC DO214AA
- Quantity:
- Payment:
- Shipping:
Inventory:7,246
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Product details
Overview
SMBJ8.0CD-M3/H from Vishay General Semiconductor is a bidirectional surface-mount Transient Voltage Suppressor (TVS) diode in SMB (DO-214AA) package, with 8.0 V stand-off voltage (VWM), 9.03–9.69 V breakdown voltage (VBR) at 1 mA, 13.4 V clamping voltage (VC) at 44.8 A peak pulse current (IPPM), and 600 W peak pulse power (PPPM) capability under 10/1000 μs waveform - used to protect signal lines and power rails in sensor interfaces and industrial control inputs.
For engineers reviewing the SMBJ8.0CD-M3/H datasheet, SMBJ8.0CD-M3/H pinout, SMBJ8.0CD-M3/H application, or SMBJ8.0CD-M3/H equivalent, key selection criteria include bidirectional polarity, ±3.5 % VBR tolerance, low leakage (<500 μA at VWM), MSL Level 1 moisture sensitivity, and halogen-free RoHS-compliant construction per JESD 201 Class 2 whisker test.
Technical Context
This device operates as a voltage-clamping transient protector for bidirectional signal paths, leveraging avalanche breakdown to shunt surge energy away from downstream ICs. Its symmetrical I-V characteristic ensures identical clamping behavior in both polarities, eliminating need for polarity-aware layout.
Designed for 10/1000 μs surge waveforms at 0.01 % duty cycle, it delivers 600 W peak pulse power with 13.4 V clamping at 44.8 A, while maintaining <500 μA reverse leakage at 8.0 V and thermal resistance of 125 °C/W (junction-to-ambient on minimum pad).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VWM | 8.0 V - maximum continuous reverse operating voltage before significant leakage begins |
| VBR min/max | 9.03 V / 9.69 V at 1 mA - tight ±3.5 % tolerance ensures predictable turn-on across production lots |
| VC @ IPPM | 13.4 V at 44.8 A - clamping voltage limits stress on protected circuitry during 10/1000 μs transients |
| PPPM | 600 W - peak surge power handling per single 10/1000 μs event, derated above 25 °C ambient |
| ID @ VWM | <500 μA - low leakage preserves signal integrity and minimizes standby power loss |
| Package | SMB (DO-214AA) - surface-mount outline with 2.20 mm max height, optimized for automated placement |
| MSL Level | Level 1 (J-STD-020) - no floor life limitation; supports standard reflow without baking |
Pinout & Package
Two-terminal bidirectional device in SMB (DO-214AA) package; no cathode band marking; terminals are symmetrical and non-polarized. Matte tin-plated leads meet J-STD-002 solderability and JESD 22-B102 mechanical robustness requirements.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode/Cathode (symmetrical) | Transient conduction path | Both terminals function identically; surge current flows bidirectionally through avalanche junction |
| Case (cathode side unmarked) | Thermal and mechanical interface | Exposed copper area on underside aids heat dissipation; requires minimum 5.0 mm × 5.0 mm copper pad for rated PPPM |
Key Features
| Feature | Design Value |
|---|---|
| Bidirectional clamping | Enables protection of AC-coupled or differential signal lines (e.g., RS-485, CAN, USB D+/D−) without polarity constraints |
| ±3.5 % VBR tolerance | Reduces design margin overhead and improves consistency in multi-channel protection schemes |
| 600 W PPPM (10/1000 μs) | Handles IEC 61000-4-5 Level 4 surges (4 kV line-earth) when properly mounted on recommended pad layout |
| Halogen-free, RoHS-compliant M3 suffix | Meets industrial-grade environmental compliance including JESD 201 Class 2 whisker resistance for long-term reliability |
| Low incremental surge resistance | Minimizes voltage overshoot during fast-rising transients (e.g., ESD, inductive switching), improving system immunity |
Applications
| Industrial Sensor Interface | Automotive Body Control Module |
|---|---|
Use Scenario: Protecting analog output lines (e.g., 4–20 mA current loop) from load dump and inductive kickback in factory automation PLCs. IC Role / Device Role / Timing Role: Bidirectional voltage clamp placed between sensor output and microcontroller ADC input. Use Value: Limits transient voltage to ≤13.4 V, preventing ADC saturation and latch-up in 3.3 V or 5 V microcontrollers. | Use Scenario: Safeguarding LIN bus transceiver pins against battery reversal and jump-start surges in door module ECUs. IC Role / Device Role / Timing Role: Parallel-connected TVS on LIN data line (VPIN) referenced to ground. Use Value: Clamps 100 V/10 ms load dump events to safe levels within 1 ns response time, preserving transceiver functionality. |
| Telecom Power Input | Consumer USB Port Protection |
Use Scenario: Secondary-side overvoltage suppression on 12 V DC input rails of VoIP gateways exposed to PoE injector faults. IC Role / Device Role / Timing Role: Standoff-rated TVS placed after DC-DC converter output filter, before LDO regulator. Use Value: Withstands 600 W surges without degradation, enabling compliance with IEC 61000-4-5 Ed. 3 Annex A. | Use Scenario: ESD and hot-swap transient protection on USB 2.0 VBUS and data lines in portable media players. IC Role / Device Role / Timing Role: Dual-device configuration: one SMBJ8.0CD-M3/H on VBUS, another on D+/D− differential pair. Use Value: Sub-1 ns response and 13.4 V clamping prevent damage to USB PHY transceivers rated for 5.5 V absolute maximum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Littelfuse SMAJ8.0CA | Same SMB package, 8.0 V VWM, but ±5 % VBR tolerance (vs. ±3.5 %); 13.6 V VC at 44.3 A | Marginally higher clamping voltage; suitable where tighter VBR spec is not required | Select SMBJ8.0CD-M3/H when precise breakdown matching or lower leakage (<500 μA) is critical |
| ON Semiconductor SMCJ8.0CA | SMC (DO-214AB) package - larger footprint (7.11 mm × 6.22 mm vs. 4.57 mm × 3.94 mm); same 8.0 V VWM, 13.4 V VC | Higher thermal mass allows 1.5× longer surge duration handling but requires PCB area increase | Choose SMBJ8.0CD-M3/H for space-constrained designs needing SMB footprint and MSL Level 1 compatibility |
Compared with SMAJ8.0CA and SMCJ8.0CA, SMBJ8.0CD-M3/H offers tighter VBR tolerance, lower profile, and superior moisture resistance - making it preferred for high-density industrial PCBs where layout space and production yield are constrained.
Availability
SMBJ8.0CD-M3/H is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive body electronics, telecom power inputs, and consumer USB port protection requiring stable component supply and full traceability.
Supply support for SMBJ8.0CD-M3/H includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay General Semiconductor is a global leader in discrete semiconductors, specializing in diodes, rectifiers, MOSFETs, and protection devices with emphasis on reliability and application-specific performance.
The SMBJ series targets board-level transient protection in harsh environments, designed specifically for high-reliability industrial, automotive, and telecom systems requiring consistent clamping and long-term stability under repeated surge stress.
FAQ
What is the polarity configuration of SMBJ8.0CD-M3/H?
SMBJ8.0CD-M3/H is a bidirectional TVS diode with symmetrical terminals and no cathode band marking. Its I-V curve is identical in both directions, enabling use on AC-coupled or differential signal lines without orientation concerns. This distinguishes it from unidirectional variants like SMBJ8.0D, which require correct anode/cathode placement relative to ground.
Does SMBJ8.0CD-M3/H meet automotive qualification standards?
SMBJ8.0CD-M3/H is not AEC-Q200 qualified, but its construction - including MSL Level 1 rating, JESD 201 Class 2 whisker resistance, and operation up to +150 °C junction temperature - supports use in non-safety-critical automotive subsystems such as body control modules and infotainment power rails when validated per system-level requirements.
What is the maximum allowable PCB pad size for full 600 W PPPM rating of SMBJ8.0CD-M3/H?
To achieve the full 600 W peak pulse power rating, SMBJ8.0CD-M3/H must be mounted on a minimum 5.0 mm × 5.0 mm copper pad area per terminal, as specified in Vishay Document 87606. Using smaller pads reduces thermal dissipation and derates PPPM - e.g., on standard FR-4 with minimal copper, PPPM drops to ~300 W.
How does the ±3.5 % VBR tolerance of SMBJ8.0CD-M3/H impact system-level surge testing?
The ±3.5 % VBR tolerance (9.03–9.69 V at 1 mA) ensures consistent clamping onset across production units, reducing variation in system-level IEC 61000-4-5 test margins. This tight distribution simplifies safety margin allocation and improves pass-rate repeatability in batch validation compared to looser-tolerance alternatives.
Can SMBJ8.0CD-M3/H replace SMBJ8.0D in an existing unidirectional design?
No - SMBJ8.0CD-M3/H is bidirectional and lacks polarity marking, so it cannot directly replace unidirectional SMBJ8.0D without circuit review. In a unidirectional application, using SMBJ8.0CD-M3/H may allow reverse-bias leakage paths or unintended conduction; redesign verification is required before substitution.
SMBJ8.0CD-M3/H Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-214AA, SMB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- -
- Bidirectional Channels:
- 1
- Voltage - Reverse Standoff (Typ):
- 8V
- Voltage - Breakdown (Min):
- 9.03V
- Voltage - Clamping (Max) @ Ipp:
- 13.4V
- Current - Peak Pulse (10/1000µs):
- 44.8A
- Power - Peak Pulse:
- 600W
- Power Line Protection:
- No
- Applications:
- General Purpose
- Capacitance @ Frequency:
- -
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-214AA (SMBJ)
SMBJ8.0CD-M3/H FAQ
1.How can I place an order for SMBJ8.0CD-M3/H through Aetrix?
Please submit a Request for Quotation (RFQ) for SMBJ8.0CD-M3/H on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SMBJ8.0CD-M3/H reliable?
The price and inventory of SMBJ8.0CD-M3/H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SMBJ8.0CD-M3/H is usually 5 days.
3.What payment methods are accepted for SMBJ8.0CD-M3/H?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SMBJ8.0CD-M3/H transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SMBJ8.0CD-M3/H?
SMBJ8.0CD-M3/H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SMBJ8.0CD-M3/H order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SMBJ8.0CD-M3/H?
For technical support, including SMBJ8.0CD-M3/H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SMBJ8.0CD-M3/H requirements.
6.How does Aetrix verify that SMBJ8.0CD-M3/H is sourced from the original manufacturer or authorized distributors?
All SMBJ8.0CD-M3/H products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SMBJ8.0CD-M3/H meets industry standards.
7.What is the process for return or replacement of SMBJ8.0CD-M3/H?
All SMBJ8.0CD-M3/H units undergo pre-shipment inspection (PSI). If there is an issue with SMBJ8.0CD-M3/H, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SMBJ8.0CD-M3/H part is unused and in its original packaging.
Return procedure for SMBJ8.0CD-M3/H:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
SMBJ8.0CD-M3/H Tags
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DESD3V3E1BL-7B
Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Diodes Incorporated
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Nexperia USA Inc.
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Toshiba Semiconductor and Storage
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Diodes Incorporated
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